butane造句 31. Other are less common, can include ethane, propane, butane and light and heavy naphtha. 32. The oxidative dehydrogenation of butane to butene and butadiene was studied by using conventional fixed bed reactor (FBR), inert membrane reactor (IMR) and mixed inert membrane reactor (MIMR). 33. The polyhedral flame has been observed clearly when butane burns in some laminar, conditions. 34. The polyhedral flame has been observed when butane burns in some laminar conditions.